Elevator.



N0. 66f1,04|-. Patented, Dec. I8, 1900.-

J. HADFIELD.

ELEVATOR. (Application filed my. 15, 1900.:

(No Model.) 2 Sheets-Shea! l.

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No. 664,04I. Patented Dec. l8, land. .1. HADFIELD.

ELEVATUR. (Application filed 1m. 15, 1900.) (No Model.) 2 Sheets-Sheet 2.

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"ATENT FFrcE.

JOSEPH HADFIIELD, on NEW YORK,

N. Y., ASSIGNOR OF ONE-THIRD TO GEORGE S. MULLALLY, OF SAME PLACE.

ELEVATOR.

SPECIFICATION forming part of Letters Patent No. 664,041, dated December 18, 1900. Application filed March 15, 1900. Serial No. 8,816. (No model.)

To all whom it may concern:

Be it known that I, J QSEPH HADFIELD, a citizen of the United States, residing in the borough of Brooklyn, New York city, in the county of Kings and State of New York, have invented new and useful Improvements in Elevators, of which the following is a specification.

This invention resides in certain novel details of construction set forth in the following specification and claims and illustrated in the annexed drawings, in which- Figure 1 is a side elevation of the elevator. Fig. 2 is a front elevation of the elevator. Fig. 3 is a section along A A, Fig. 1. Fig. 4 is a section along 13-13, Fig. 1. Fig. 5 is a section along 0 0, Fig. 4. Fig. 6 is a section along D D, Fig. 4.. Fig. 7 is a detail view showing a hand fastened to the drums.

In the drawings is shown an elevator car or cage 0,, made to travel or run up and down a shaft or along guides or uprights b. The band or series of bands or connections 0 pass from the top of the car about'one or more drums d and eand are shown connected with the bottom of the car. The drum or drums e form an actuator for the bands or car, said drum 6 having a gear-and-worm connection with the shaft f, driven by suitable means or power. An electric motor is shown, for example, in the drawings. The connection or hand-rope g, passing in reach of the conductor in the car, can be used to work the switch or arrangement 77., Fig. 1, for starting and stopping.

A counterbalance or weight is shown at i, and this weight, or rather the cross-head la, connected with the weight, has a rack-andpinion connection with the shaft of the actuating-drum e, the rack being shown at Z and the pinion at m. The rack-and-pinion arrangement shown is such that a small mo tion or short travel of the weight corresponds to a longer or considerable travel of the car.

The weight 2' is shown seated about or guided by a cylinder 0, whose piston nis conneoted with the weight 41 or cross -head 70. The cylinder 0 is shown with a passage 19, Fig. 6, formed in the cylinder-shell and having communication at either end with the piston-chamber in the cylinder. As the piston 'n,

travels up or down the fluid or oil contained in the cylinder travels down or up, and this back-and-forth flow of the liquid can be regulated or retarded bya valve 1 shown in form of a screw and adapted to close or obstruct the passage 10 more or less, as required. This cylinder 0, with its piston and plug or valve q, forms a speed-regulator adapted to allow quicker or slower travel of the piston '12, and consequently of the car.

The counterbalance t' is shown in the elevator-shaft below the car, so as not to rise above the latter. Should any breakage or fall of weight t' occur, the latter cannot fall on the car, and an element of danger is thus averted.

The connections 0 are practically made of steel bands,which combine strength and flexibility and do not wear or strain and are thus considered superior to ropes or cables. These bands secure a frictional hold about drum 2, and the latter if covered with such substance as rubber or the like has been found to give firm friction or grip for the bands. The bands are shown secured to the cage by turnbuckles r, so that the several bands can be equalized or set to uniform tension. At the bottom of the cage the bands are shown with spring connections 3. The hand rope or switch-wire 9 can, as usual in elevator constructions, have the upper and lower stoplugs for automatically arresting the car; but this feature is known and forms no part of the invention.

A series of worm-shafts is shown at 1, connected to one another and to worm or actuating shaft f by miter-gears 2. The drum e is shown in sections or with several gears 3, engaging the shafts f and 1. This worm-shaft series f and 1 distributes the power over the drum and offers security against breakage. This construction besides being simple is safe. No counterweight is made to move up in the shaft, but such counterweight is kept below the car. The cable-regulator or chain commonly connected to the bottoms of cars can be dispensed with in this construction, so that no'extra weight has to be lifted or moved.

The speed-regulator or piston n is not applied to the car, but to the actuator or motive power, and forms a compact and simple structure. The arrangement of motor-shaft f with drum e is such that no great or excessive power is required,as the shaftf, with its worm engaging the drum e, is capable of developing considerable driving force.

The passage 19 instead of being in the cylinder-wall might be a pipe extended alongside the cylinder.

The bands or connections 0 instead of being endless or attached to the top and bottom of the car could be wound about or have their ends secured to drum (2, as shown in Fig. 7. Such modifications are obvious. Such band winding about a drum will have its successive layers superposed on one another and not running side by side, as would be the case with a rope, so that the successive layers will not rub or wear against one another.

What I claim as new, and desire to secure by Letters Patent, is

1. An elevator-shaft and a car, an actuator for causing the car to travel back and forth, and a counterweight made separate from the actuator and placed in the shaft below the car so as not to rise above the latter substantially as described.

2. An elevator-car, a driving-shaft for the car, a motor for actuating the shaft and a counterbalance made separate from the motor and having a rack-and-pinion connection with the shaft, substantially as described.

3. An elevator-car, an actuator for the car, a speed-regulating cylinder and a counterweight made to surround and be guided by the cylinder, substantially as described.

4. An elevator-car, a driving-drum for the car, a cross-head 7c geared to the drum, a piston and counterweight suspended from the cross-head, and a cylinder for the piston, said counterweight being seated about the cylin= der substantially as described.

5. An elevator-shaft and a car, combined with a worm-shaft and gear actuating the car, a counterweight connected to the gear, a cylinder about which the counterweight is guided,and apiston in the cylinderconnected with the counterweight, said cylinder having a passage with a regulating-valve, substantially as described.

6. An elevator-car, a driving-drum for the car provided with a gear and pinion, a rackl engaged by the pinion, a piston and counterweight connected to the rack, a cylinder for the piston about which the counterweight is seated, a worm-shaft made to engage the gear and a motor for the shaft, substantially as described.

7. An elevator-car, a driving-drum for the car provided with a gear,a central worm-shaft made to engage the gear, a motor, and lateral worm-shafts driven by the central worm-shaft and geared to the drum, substantially as described.

In testimony whereof I have hereunto set my hand in the presence of two subscribing witnesses.

JOSEPH HADFIELD. Witnesses:

W. C. HAUFF, E. F. KASTENHUBER. 

